CA1296980C - Heavy duty pneumatic tire - Google Patents
Heavy duty pneumatic tireInfo
- Publication number
- CA1296980C CA1296980C CA000524076A CA524076A CA1296980C CA 1296980 C CA1296980 C CA 1296980C CA 000524076 A CA000524076 A CA 000524076A CA 524076 A CA524076 A CA 524076A CA 1296980 C CA1296980 C CA 1296980C
- Authority
- CA
- Canada
- Prior art keywords
- groove
- circumferential groove
- platform
- sidewall
- tire
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C11/04—Tread patterns in which the raised area of the pattern consists only of continuous circumferential ribs, e.g. zig-zag
- B60C11/042—Tread patterns in which the raised area of the pattern consists only of continuous circumferential ribs, e.g. zig-zag further characterised by the groove cross-section
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C11/00—Tyre tread bands; Tread patterns; Anti-skid inserts
- B60C11/03—Tread patterns
- B60C11/04—Tread patterns in which the raised area of the pattern consists only of continuous circumferential ribs, e.g. zig-zag
- B60C11/042—Tread patterns in which the raised area of the pattern consists only of continuous circumferential ribs, e.g. zig-zag further characterised by the groove cross-section
- B60C11/047—Tread patterns in which the raised area of the pattern consists only of continuous circumferential ribs, e.g. zig-zag further characterised by the groove cross-section the groove bottom comprising stone trapping protection elements, e.g. ribs
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
ABSTRACT
The invention relates to a heavy duty pneumatic tire, wherein the problem of the stone pick up is effectively suppressed.
The tire comprises at least one zig-zag or straight circumferential groove and discontinuous platforms provided on the groove sidewall of the circumferential groove and protruding therefrom.
The above circumferential groove and platforms follow the following relations:
0.2 ? 11/L1 ? 0.7 0 ? 12/L2 ? 0.4 0.2 ? H/D ? 1.0 wherein 11 is the base width of the platform;
L1 is the bottom width of the circumferential groove;
12 is the top width of the platform;
L2 is the open width of the circumferential groove;
H is the height of the platform;
D is the depth of the circumferential groove.
The invention relates to a heavy duty pneumatic tire, wherein the problem of the stone pick up is effectively suppressed.
The tire comprises at least one zig-zag or straight circumferential groove and discontinuous platforms provided on the groove sidewall of the circumferential groove and protruding therefrom.
The above circumferential groove and platforms follow the following relations:
0.2 ? 11/L1 ? 0.7 0 ? 12/L2 ? 0.4 0.2 ? H/D ? 1.0 wherein 11 is the base width of the platform;
L1 is the bottom width of the circumferential groove;
12 is the top width of the platform;
L2 is the open width of the circumferential groove;
H is the height of the platform;
D is the depth of the circumferential groove.
Description
lZC.tf,~ 0 This invention relates to a heavy duty pneumatic tire wherein the platforms provided within the circumferential grooves of the tread are specially designed dimenslonally so as to pre-clude the problem of stone pick up.
In general, the tires for heavy vehicles are provided in the tread with the zig-zag or straight circumferential grooves extending circumferentially to improve drainage, wear resistance and maneuver stability. Such the circumferential grooves tend to pick up the stones.
When the stone pick-up occurs, it is difficult to dis-charge the stone from the groove due to the strong restraining force of the groove. As a result, the stone strikes the base rubber of the groove for every rotation of the tire, and causes the breakage thereof. Countermeasures for stone pick up, include widening of the circumferential grooves and application of the stepped sidewalls to the circumferential groove, whereby the occurrence of the stone pick-up is suppressed and the discharge from the groove is enhanced. Such countermeasures, however, have drawbacks: in the former, the wet grip property and wear resis-tance of the tire are decreased; in the latter, the wet grip property is reduced with the groove width becoming narrower due to wear.
The present invention provides a heavy duty pneumatic tire which can solve the problem of the stone pick up effectively without sacrificing the wet-grip property, wear resistance and the like.
The present invention provides a heavy duty pneumatic tire, comprising a circumferential groove extending zig-zag or straight in the circumferential direction of the tire, said cir-cumferential groove provided in one side of a tread wlth respect to the center thereof to have an inside groove sidewall on the side of the tread center and an outside groove sidewall on - 1 - '~' lZC~ O
another side, dlscontinuous platforms provided on the inside groove sidewall of said circumferential groove to protrude there-from, the circumferential groove and platforms having the follow-ing relations: 1.3 ~ < ~ , 0.2 < ll/Ll < 0.7, 0 < 12/L2 < 0.4;
0.2 < H/D < 1.0 wherein o~ is the angle of the inside groove sidewall to the radial direction of the tire; ~ is the angle of the outside groove sidewall to the radial direction of the tire;
Ll is the bottom width of the circumferential groove; L2 iS the open width of the circumferential groove; 11 is the base width of the platform; 12 iS the top width of the platform; H is the height of the platform; and D is the depth of the circumferential groove. Suitably said platform has a sidewall inclined at an angle ~ larger than the angle ~ of the outside groove sidewall of the circumferential groove.
The present lnvention will now be described in detail with reference to the accompanying drawings, in which:-Fig. 1 is a plan view of the tread showing one embodi-ment of the present invention;
Fig. 2 iS a cross-sectional view taken along the line A-A of Fig. l;
Fig.s 3 to 6 are plan views of the treads each showing another embodiment of the present invention;
Fig.s 7(a) to (d) are cross-sectional views of the cir-cumferential grooves corresponding to the comparative Examples 1 to 4 for test in Table 2, respectively; and Fig.s B(a) to (d) are cross-sectional views of the cir-cumferential grooves corresponding to the embodiments 1 to 4 for test Table 2, respectively.
In Fig.s 1 and 2 showing the first embodiment of the ~r . .
12969~0 present invention, the heavy duty pneumatic tire 1 is provided in the tread T thereof with a plurality of circumferential grooves Gl,G2 and G3 each extending zig-zag in the circumferential direc-tion of the tire. Each circumferential groove Gl or G2 is pro-vided at one side of the groove sidewalls 2 with the platforms 3which are discontinuous in the circumferential direction. The circumferential grooves Gl and G2 are formed on each side of the circumferential groove G3 formed along the center line of the tread T, respectively, and each the groove Gl or G2 is wider than the groove G3. Hereinafter, the above-mentioned circumferential grooves Gl and G2 are referred to as circumferential grooves G, inclusively.
The platform 3, in this embodiment, extends radially of the tire from somewhat radial inner portion of the tread surface 4 to the groove bottom of the circumferential groove G.
The ratio (ll/Ll) of the base width 11 of the platform 3 at the groove bottom to the bottom width Ll of the circumfer-ential groove G is more than 0. 2, whereby the stone pick up issuppressed and further, the base rubber of groove is effectively prevented from damage even if stone is picked up by the groove.
On the other hand, it is not preferable for the ratio ~ ll/Ll) to be more than 0.7 which leads the circumferential groove to the decrease in the groove volume with decreasing in the drainage efficiency.
The ratio ( 12/L2) of the top width 12 of the platform 3 to the open width L2 of the circumferentlal groove needs to be 30 less than 0.4. When the ratio ( 12/L2~ is more than 0.4, the groove volume becomes small so that the drainage efficiency which is an important function of the circumferential groove G, decrea-ses remarkably.
The ratio (H/D) of the height H of the platform 3 to the depth D of the circumferential groove G is more than 0. 2.
~ 7:
~A ~
lZ96980 When the ratio (H/D) is less than 0.2, the efflciency of the platform 3 in prevention of the stone pick up is insufficlent.
The sum total of the surface areas of the platforms within each circumferential groove is in the range of 20% to 60%
of the total groove base area of the circumferential groove.
Furthermore, following aspects are more preferable for the prevention of the stone pick up: the platforms 3 are provided on the inside groove sidewall of the above-mentioned groove side-walls with respect to the tread center; the inclination angle of the inside groove sidewall 2 to the radial direction of the tire is not less than 1.3 times the inclination angle of the opposite outside groove sidewall; and the inclination angle of the sidewall 3a of the platform 3 is larger than the inclination angle of the outside groove sidewall.
The degrees of the stone pick up of the test tires were ~' measured unAer the conditions set out in Table 1.
Each test tire has the same circumrerential groove G in open width thereof, but each groove G has the different sectional shape with each other as shown in Fig. 7(a) to (d) and Fig. 8(a) to (d).
The measured results are set out in Table 2, wherein the number of the picked up stones is defined by an index on the assumption that the comparative example 1 is 100, and the smaller the value, the better the prevention of stone pick up.
Table i Tread pattern : Fig. 1 Tire size : lO.OOR20 Rim : 7.50V X 20 Pressure : 8.0 kg/cmZ
Yehicle : Dump truck Gross weight of vehicle : 12 ton Running distance : 8 km (gravel road) and 6 km (paved road) Average speed : 60 km/h -Table 2 Comparative examples : Embodiments of Invention ~ . . .
Shape (Fig. ) 7a 7b 7c 7d 8a 8b 8c 8d _______________________________________________________________ l l/L1 --- --- --- 0.5 0 0.50 0.50 0.50 H/D --- --- --- 0.3 0.75 0.75 0.50 9.25 12/L2 --- --- --- --- 0.20 0.20 0.20 0.20 () 10 15 20 10 15 15 15 15 ( ) 10 10 10 10 10 10 10 10 Picked up stone:
Diameter (mm) Distribution (~) 0.1- 2.0 0 0 0 0 0 0 2-.1- 4.0 0 0 1 0 8 28 5 4.1- 6.0 1 9 11 0 25 59 16 10 6.1- 8.0 13 2862 13 41 13 61 69 8.1-10.0 75 6126 82 25 0 18 19 10.1 - 11 2 0 5 1 0 0 _______________________________________________________________ Index for stone 100 62 56 69 28 8 32 41 pick up _________ 12969~0 In Fig. 3 showing tl)e second embodirrlent of the invention, the platforms 3 are provided on both the groove sidewalls Or the circumferential groove G3 provided centrally Or the tread T.
In Fig. 4 showing the third embodiment of the invention, other independent platforms 8 are provided between the platforms 3 provided within the circumferential grooves G1 and G2.
In Fig. 5 showing the fourth embodiment of the invention, the platforms 3 are provided on both the opposite groove sidewalls of each circumferential groove G1 or G2, and further, the grooves G1 and G2 are provided with other independent platforms 8.
In Fig. 6 showing the sixth embodiment of the invention, the platforms 3 are provided in the cercumferential groove G3 only.
In addition, the platforms 3 may be provided on the outside groove sidewall only.
As described above, in this invention, the circumferential groove is provided with the platforms of a specific form, whereby the stone pick up is suppressed, and the picked up stones can be discharged easily from the groove. Accordingly, there is decreased the damage Or the groove bottom due to the picked up stone.
In general, the tires for heavy vehicles are provided in the tread with the zig-zag or straight circumferential grooves extending circumferentially to improve drainage, wear resistance and maneuver stability. Such the circumferential grooves tend to pick up the stones.
When the stone pick-up occurs, it is difficult to dis-charge the stone from the groove due to the strong restraining force of the groove. As a result, the stone strikes the base rubber of the groove for every rotation of the tire, and causes the breakage thereof. Countermeasures for stone pick up, include widening of the circumferential grooves and application of the stepped sidewalls to the circumferential groove, whereby the occurrence of the stone pick-up is suppressed and the discharge from the groove is enhanced. Such countermeasures, however, have drawbacks: in the former, the wet grip property and wear resis-tance of the tire are decreased; in the latter, the wet grip property is reduced with the groove width becoming narrower due to wear.
The present invention provides a heavy duty pneumatic tire which can solve the problem of the stone pick up effectively without sacrificing the wet-grip property, wear resistance and the like.
The present invention provides a heavy duty pneumatic tire, comprising a circumferential groove extending zig-zag or straight in the circumferential direction of the tire, said cir-cumferential groove provided in one side of a tread wlth respect to the center thereof to have an inside groove sidewall on the side of the tread center and an outside groove sidewall on - 1 - '~' lZC~ O
another side, dlscontinuous platforms provided on the inside groove sidewall of said circumferential groove to protrude there-from, the circumferential groove and platforms having the follow-ing relations: 1.3 ~ < ~ , 0.2 < ll/Ll < 0.7, 0 < 12/L2 < 0.4;
0.2 < H/D < 1.0 wherein o~ is the angle of the inside groove sidewall to the radial direction of the tire; ~ is the angle of the outside groove sidewall to the radial direction of the tire;
Ll is the bottom width of the circumferential groove; L2 iS the open width of the circumferential groove; 11 is the base width of the platform; 12 iS the top width of the platform; H is the height of the platform; and D is the depth of the circumferential groove. Suitably said platform has a sidewall inclined at an angle ~ larger than the angle ~ of the outside groove sidewall of the circumferential groove.
The present lnvention will now be described in detail with reference to the accompanying drawings, in which:-Fig. 1 is a plan view of the tread showing one embodi-ment of the present invention;
Fig. 2 iS a cross-sectional view taken along the line A-A of Fig. l;
Fig.s 3 to 6 are plan views of the treads each showing another embodiment of the present invention;
Fig.s 7(a) to (d) are cross-sectional views of the cir-cumferential grooves corresponding to the comparative Examples 1 to 4 for test in Table 2, respectively; and Fig.s B(a) to (d) are cross-sectional views of the cir-cumferential grooves corresponding to the embodiments 1 to 4 for test Table 2, respectively.
In Fig.s 1 and 2 showing the first embodiment of the ~r . .
12969~0 present invention, the heavy duty pneumatic tire 1 is provided in the tread T thereof with a plurality of circumferential grooves Gl,G2 and G3 each extending zig-zag in the circumferential direc-tion of the tire. Each circumferential groove Gl or G2 is pro-vided at one side of the groove sidewalls 2 with the platforms 3which are discontinuous in the circumferential direction. The circumferential grooves Gl and G2 are formed on each side of the circumferential groove G3 formed along the center line of the tread T, respectively, and each the groove Gl or G2 is wider than the groove G3. Hereinafter, the above-mentioned circumferential grooves Gl and G2 are referred to as circumferential grooves G, inclusively.
The platform 3, in this embodiment, extends radially of the tire from somewhat radial inner portion of the tread surface 4 to the groove bottom of the circumferential groove G.
The ratio (ll/Ll) of the base width 11 of the platform 3 at the groove bottom to the bottom width Ll of the circumfer-ential groove G is more than 0. 2, whereby the stone pick up issuppressed and further, the base rubber of groove is effectively prevented from damage even if stone is picked up by the groove.
On the other hand, it is not preferable for the ratio ~ ll/Ll) to be more than 0.7 which leads the circumferential groove to the decrease in the groove volume with decreasing in the drainage efficiency.
The ratio ( 12/L2) of the top width 12 of the platform 3 to the open width L2 of the circumferentlal groove needs to be 30 less than 0.4. When the ratio ( 12/L2~ is more than 0.4, the groove volume becomes small so that the drainage efficiency which is an important function of the circumferential groove G, decrea-ses remarkably.
The ratio (H/D) of the height H of the platform 3 to the depth D of the circumferential groove G is more than 0. 2.
~ 7:
~A ~
lZ96980 When the ratio (H/D) is less than 0.2, the efflciency of the platform 3 in prevention of the stone pick up is insufficlent.
The sum total of the surface areas of the platforms within each circumferential groove is in the range of 20% to 60%
of the total groove base area of the circumferential groove.
Furthermore, following aspects are more preferable for the prevention of the stone pick up: the platforms 3 are provided on the inside groove sidewall of the above-mentioned groove side-walls with respect to the tread center; the inclination angle of the inside groove sidewall 2 to the radial direction of the tire is not less than 1.3 times the inclination angle of the opposite outside groove sidewall; and the inclination angle of the sidewall 3a of the platform 3 is larger than the inclination angle of the outside groove sidewall.
The degrees of the stone pick up of the test tires were ~' measured unAer the conditions set out in Table 1.
Each test tire has the same circumrerential groove G in open width thereof, but each groove G has the different sectional shape with each other as shown in Fig. 7(a) to (d) and Fig. 8(a) to (d).
The measured results are set out in Table 2, wherein the number of the picked up stones is defined by an index on the assumption that the comparative example 1 is 100, and the smaller the value, the better the prevention of stone pick up.
Table i Tread pattern : Fig. 1 Tire size : lO.OOR20 Rim : 7.50V X 20 Pressure : 8.0 kg/cmZ
Yehicle : Dump truck Gross weight of vehicle : 12 ton Running distance : 8 km (gravel road) and 6 km (paved road) Average speed : 60 km/h -Table 2 Comparative examples : Embodiments of Invention ~ . . .
Shape (Fig. ) 7a 7b 7c 7d 8a 8b 8c 8d _______________________________________________________________ l l/L1 --- --- --- 0.5 0 0.50 0.50 0.50 H/D --- --- --- 0.3 0.75 0.75 0.50 9.25 12/L2 --- --- --- --- 0.20 0.20 0.20 0.20 () 10 15 20 10 15 15 15 15 ( ) 10 10 10 10 10 10 10 10 Picked up stone:
Diameter (mm) Distribution (~) 0.1- 2.0 0 0 0 0 0 0 2-.1- 4.0 0 0 1 0 8 28 5 4.1- 6.0 1 9 11 0 25 59 16 10 6.1- 8.0 13 2862 13 41 13 61 69 8.1-10.0 75 6126 82 25 0 18 19 10.1 - 11 2 0 5 1 0 0 _______________________________________________________________ Index for stone 100 62 56 69 28 8 32 41 pick up _________ 12969~0 In Fig. 3 showing tl)e second embodirrlent of the invention, the platforms 3 are provided on both the groove sidewalls Or the circumferential groove G3 provided centrally Or the tread T.
In Fig. 4 showing the third embodiment of the invention, other independent platforms 8 are provided between the platforms 3 provided within the circumferential grooves G1 and G2.
In Fig. 5 showing the fourth embodiment of the invention, the platforms 3 are provided on both the opposite groove sidewalls of each circumferential groove G1 or G2, and further, the grooves G1 and G2 are provided with other independent platforms 8.
In Fig. 6 showing the sixth embodiment of the invention, the platforms 3 are provided in the cercumferential groove G3 only.
In addition, the platforms 3 may be provided on the outside groove sidewall only.
As described above, in this invention, the circumferential groove is provided with the platforms of a specific form, whereby the stone pick up is suppressed, and the picked up stones can be discharged easily from the groove. Accordingly, there is decreased the damage Or the groove bottom due to the picked up stone.
Claims (2)
1. A heavy duty pneumatic tire, comprising a cir-cumferential groove extending zig-zag or straight in the cir-cumferential direction of the tire, said circumferential groove provided in one side of a tread with respect to the center there-of to have an inside groove sidewall on the side of the tread center and an outside groove sidewall on another side, discontin-uous platforms provided on the inside groove sidewall of said circumferential groove to protrude therefrom, the circumferential groove and platforms having the following relations: 1.3 .beta. ? .alpha., 0.2 ? 11/L1 ? 0.7, 0 ? 12/L2 ? 0.4; 0.2 ? H/D ? 1.0 wherein .alpha. is the angle of the inside groove sidewall to the radial direction of the tire; .beta. is the angle of the outside groove sidewall to the radial direction of the tire; L1 is the bottom width of the cir-cumferential groove; L2 is the open width of the circumferential groove; 11 is the base width of the platform; 12 is the top width of the platform; H is the height of the platform; and D is the depth of the circumferential groove.
2. A heavy duty pneumatic tire of claim 1, wherein said platform has a sidewall inclined at an angle .alpha. larger than the angle .beta. of the outside groove sidewall of the circumferential groove.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26991885 | 1985-11-30 | ||
| JP269918 | 1989-10-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1296980C true CA1296980C (en) | 1992-03-10 |
Family
ID=17479027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000524076A Expired - Fee Related CA1296980C (en) | 1985-11-30 | 1986-11-28 | Heavy duty pneumatic tire |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0227322B1 (en) |
| JP (1) | JPH0712764B2 (en) |
| AU (1) | AU590027B2 (en) |
| CA (1) | CA1296980C (en) |
| DE (1) | DE3682574D1 (en) |
| NZ (1) | NZ218434A (en) |
| ZA (1) | ZA868894B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110893741A (en) * | 2018-09-13 | 2020-03-20 | 韩国轮胎与科技株式会社 | Pneumatic tire |
Families Citing this family (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6261807A (en) * | 1985-09-10 | 1987-03-18 | Sumitomo Rubber Ind Ltd | Pneumatic radial tire |
| US5115850A (en) * | 1991-02-19 | 1992-05-26 | The Goodyear Tire & Rubber Company | Tread with improved groove design |
| US5337815A (en) * | 1992-10-05 | 1994-08-16 | The Goodyear Tire & Rubber Company | Pneumatic tire having improved wet traction |
| JP3193169B2 (en) * | 1992-12-22 | 2001-07-30 | 住友ゴム工業株式会社 | Pneumatic tires for heavy vehicles |
| IT1288435B1 (en) * | 1997-01-28 | 1998-09-22 | Pirelli | TIRE AND TREAD BAND FOR TIRES PARTICULARLY FOR TRUCKS AND SIMILAR |
| JP5011684B2 (en) * | 2005-09-02 | 2012-08-29 | 横浜ゴム株式会社 | Pneumatic tire |
| FR2900367B1 (en) * | 2006-04-26 | 2008-07-04 | Michelin Soc Tech | PNEUMATIC FOR HANDLING VEHICLE |
| US8100159B2 (en) * | 2006-10-24 | 2012-01-24 | Toyo Tire & Rubber Co., Ltd. | Pneumatic tire with circumferential main grooves having protrusions |
| BRPI0722333A2 (en) * | 2007-12-21 | 2014-04-08 | Michelin Soc Tech | WHEEL BAND |
| FR2939365B1 (en) * | 2008-12-05 | 2012-03-16 | Michelin Soc Tech | NOISE ATTENUATING DEVICE FOR ROLLING BAND. |
| JP5498245B2 (en) * | 2010-05-10 | 2014-05-21 | 株式会社ブリヂストン | tire |
| KR101410822B1 (en) * | 2012-11-22 | 2014-06-23 | 한국타이어 주식회사 | Air Pressure Tire |
| WO2014096935A1 (en) | 2012-12-21 | 2014-06-26 | Pirelli Tyre S.P.A. | Tyre for heavy load vehicle wheels |
| US9517660B1 (en) * | 2013-04-21 | 2016-12-13 | The Boeing Company | Studded tire and method of increasing tire traction |
| DE102016211108A1 (en) * | 2016-06-22 | 2017-12-28 | Continental Reifen Deutschland Gmbh | Vehicle tires |
| US20200114695A1 (en) * | 2018-10-16 | 2020-04-16 | Bridgestone Americas Tire Operations, Llc | Tire tread sidewall features |
| DE102018218084A1 (en) * | 2018-10-23 | 2020-04-23 | Continental Reifen Deutschland Gmbh | Pneumatic vehicle tires |
| EP3880496B1 (en) * | 2018-11-15 | 2024-06-19 | Compagnie Generale Des Etablissements Michelin | Truck tire tread with angled ribs having stone ejectors |
| DE102022211764A1 (en) * | 2022-11-08 | 2024-05-08 | Continental Reifen Deutschland Gmbh | Vehicle tires |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3951193A (en) * | 1974-07-11 | 1976-04-20 | The Goodyear Tire & Rubber Company | Groove in the tread of a tire |
| JPS54155503A (en) * | 1978-05-26 | 1979-12-07 | Bridgestone Corp | Heavy-load pneumatic tyre excellent in its water draining performance |
| IT1101233B (en) * | 1978-12-22 | 1985-09-28 | Pirelli | TREAD DESIGN WITH SIDE GROOVES |
| CA1198043A (en) * | 1981-06-12 | 1985-12-17 | Barry W. Treves | Tyre treads |
| JPS5822702A (en) * | 1981-07-31 | 1983-02-10 | Yokohama Rubber Co Ltd:The | Pneumatic tire |
| JPS58156405A (en) * | 1982-03-11 | 1983-09-17 | Yokohama Rubber Co Ltd:The | Air radial tire for passenger automobile |
| JPS6092904A (en) * | 1983-10-27 | 1985-05-24 | Sumitomo Rubber Ind Ltd | Pneumatic tire for large-sized car |
| JPS60203504A (en) * | 1984-03-28 | 1985-10-15 | Sumitomo Rubber Ind Ltd | Pneumatic tire |
| JPS61181704A (en) * | 1985-02-07 | 1986-08-14 | Toyo Tire & Rubber Co Ltd | Automobile pneumatic tire |
| JPS6261807A (en) * | 1985-09-10 | 1987-03-18 | Sumitomo Rubber Ind Ltd | Pneumatic radial tire |
-
1986
- 1986-11-24 ZA ZA868894A patent/ZA868894B/en unknown
- 1986-11-27 EP EP86309261A patent/EP0227322B1/en not_active Expired - Lifetime
- 1986-11-27 DE DE8686309261T patent/DE3682574D1/en not_active Expired - Fee Related
- 1986-11-28 NZ NZ218434A patent/NZ218434A/en unknown
- 1986-11-28 CA CA000524076A patent/CA1296980C/en not_active Expired - Fee Related
- 1986-11-28 AU AU65804/86A patent/AU590027B2/en not_active Ceased
- 1986-11-28 JP JP28497286A patent/JPH0712764B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110893741A (en) * | 2018-09-13 | 2020-03-20 | 韩国轮胎与科技株式会社 | Pneumatic tire |
| CN110893741B (en) * | 2018-09-13 | 2023-01-17 | 韩国轮胎与科技株式会社 | Pneumatic tire |
Also Published As
| Publication number | Publication date |
|---|---|
| ZA868894B (en) | 1987-07-29 |
| DE3682574D1 (en) | 1992-01-02 |
| EP0227322B1 (en) | 1991-11-21 |
| AU6580486A (en) | 1987-06-04 |
| NZ218434A (en) | 1989-01-27 |
| EP0227322A2 (en) | 1987-07-01 |
| AU590027B2 (en) | 1989-10-26 |
| JPS62231803A (en) | 1987-10-12 |
| EP0227322A3 (en) | 1988-06-01 |
| JPH0712764B2 (en) | 1995-02-15 |
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